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Patent US2864944A successfully refreshed from Google Patents.
US2864944A
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Two way radio relay system including traveling wave tubes
Assignee: RCA Corp
•
Filing: 1954-05-18
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Granted: 1958-12-16
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Expires: 1974-05-18
Abstract
No abstract record available.
Inventors
- 👤 Rolf W Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:23
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/155; H04B7/15528; H04B7/15542
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1502812A
Cited
US1595135A
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US1770143A
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US1657451A
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US1579253A
Cited
GB676320A
Cited
GB684693A
Cited
US2619543A
Cited
US2674692A
Cited
US2691065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |